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प्रश्न
Give reason for the following:
If you uproot a plant from the soil, its leaves soon wilt.
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उत्तर
If a plant is uprooted, the leaves continue to lose water through transpiration, but there is no more water absorbed by the roots. This does not allow compensation for the loss of water by transpiration; hence, the leaves of the uprooted plant will wilt soon.
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संबंधित प्रश्न
the exact location of the Lenticels
The figure shows a diagrammatic representation of the movement of certain substances inside the stem of a certain plant. Write five sentences on whatever you can explain about the processes or the arrangement of structures indicated in the diagram.
Note: - Each sentence must include one or more of the following four words, and each word can be used several times. Xylem, phloem, roots, leaves.
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(ii) In which plant (a), (b) or (c), would the water move up slowly?
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(iv) What is being investigated by this experiment?
How is root hair structurally adapted for absorption of water from the soil?
The figure given below is a diagrammatic representation of a part of the cross-section of the root in the root hair zone. Study the same and then answer the questions that follow :
(i) Name the parts indicated by guidelines ‘1’ to ‘5’
(ii) Is the root hair cell unicellular or multi-cellular?
(iii) Draw a labeled diagram of the root hair cell as it would appear if some fertilizer is added to the soil close to it.
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(v) What pressure is responsible for the movement of water in the direction indicated by arrows?
(vi) How is this pressure set up?
Given below is an experimental demonstration.
(i) Which phenomenon has been demonstrated in the given figure?
(ii) What is the solute and what is solvent in the above experiment?
(iii) Define the phenomenon in Q. (i) above.
(iv) Give one example from your daily life experiences based on this principle.
Multiple Choice Question:
In soil, water available for absorption by root is ______.
____________ regions are present in a typical root.
Epiphytic plants like orchids absorb water vapours from air with the help of ______ having special tissue called velamen.
How many regions are there in a typical root?
